Convection Inside Nanofluid Cavity with Mixed Partially Boundary Conditions

In recent decades, research utilizing numerical schemes dealing with fluid and nanoparticle interaction has been relatively intensive. It is known that CuO nanofluid with a volume fraction of 0.1 and a special thermal boundary condition with heat supplied to part of the wall increases the average Nusselt number for different aspect ratios ranges and for high Rayleigh numbers. Due to its simplicity, stability, accuracy, efficiency, and ease of parallelization, we use the thermal single relaxation time Bhatnagar-Gross-Krook (SRT BGK) mesoscopic approach D(2)Q(9) scheme lattice Boltzmann method in order to solve the coupled Navier-Stokes equations. Convection of CuO nanofluid in a square enclosure with a moderate Rayleigh number of 10(5) and with new boundary conditions is highlighted. After a successful validation with a simple partial Dirichlet boundary condition, this paper extends the study to deal with linear and sinusoidal thermal boundary conditions applied to part of the wall.

Automated summary

Research focusing on fluid and nanoparticle interaction using numerical schemes has been intense in recent decades. This study highlights the thermal properties of CuO nanofluid under specific conditions, utilizing a mesoscopic approach to solve coupled equations and investigating convection phenomenon under new boundary conditions.